I have the very same problem, and am glad that you brought this subject to our attention. Let me suggest that you contact the local county agent in your area. They deal with garden and pest problems all day long. If there is a product to use or a method to get rid of the ants, they will be able to tell you what works for your area. In many cases these folks are paid by tax dollars, so your have a right to ask them to come to your house and give you specific advice. Good luck! Let us know what they tell you.